Our company makes the following answers according to the customer's external factors of electronic scales:
First of all, it should be based on the principle of first and second. After the electronic scale fails, the influence of external factors should be excluded first. Changes in the external environment can have a direct impact on the weighing of the electronic scale. Changes in power supply, vibration, wind, and lightning can cause the electronic scale to be unstable. Wind and lightning are force majeure, and we can't avoid it. Therefore, we should try to avoid starting in high winds and thunderstorms. At the same time, the lightning protection measures and grounding protection of the electronic scale should be done. For vibration, measures such as cushioning devices, isolation grooves, etc. can be taken to reduce the influence. The power supply is not pure, and the method of separately wiring or adding a parameter regulator for the electronic scale can be adopted.
Case:
Fault phenomenon: Our company has a SCS-2 electronic cylinder scale. The instrument often shows that the value is unstable during work. Irregular changes. And the range of change is very large, it can not be properly weighed. Occasionally, it works fine.
Fault analysis: The displayed value changes from normal to normal. First suspect the power supply and external interference. Use a multimeter to observe the power supply voltage. Sometimes there are sudden fluctuations. Carefully observed at the scene, found an electric crane near the electronic platform. When the crane is working, the scale display is unstable. After the crane is stopped, the electronic platform is also restored to the normal power supply circuit of the electronic scale. It was found that the electronic platform was connected to the crane on the same line, and the crane had great ripple interference to the circuit when it was working.
Troubleshooting: Separate the power supply of the electronic weighbridge from the crane. Introduce a separate power supply for the electronic platform. Troubleshooting.
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